Built to Weatherby's exacting standards in Italy the 18i uses a proven inertia operating system to deliver an evenly-weighted gun with superior reliability. Instead of porting off gasses from the combustion like a gas-operated shotgun this action harnesses the energy of the recoiling gun to run its bolt. Because no powder gets re-routed into the gun the result is a cleaner-running low maintenance gun. Designed for shooters who demand consistency of performance for high-volume shooting the 18i combines engineering and superior material composition to provide reliable operation in the harshest of environments. The one-piece receiver is precision machined from billet aluminum for strength and simplicity. The 18i is shipped with five choke tubes and a proper choke tube wrench. - KEY FEATURES - Reliable inertia recoil reloading system - Elastomer recoil pad for reduced felt recoil - Comfortable elastomer cheek pad - Shim adjustable polymer stock for perfect shooter fit - Ergonomic textured grip - Full length ventilated top rib - LPA Fiber sights - Camo pattern adheres directly to all metalwork and stock components for longevity - Chrome lined bore - 5 crio plus choke tubes (cylinder improved cylinder modified improved modified full) with included storage case and choke wrench - 4+1 (2+1 with included magazine limiting plug) - Compatible with magazine tube extensions - 3 or 3.5 chamber